The Genetic Code Table Today

Differences in the two  genetic code tables are:

  1) In Khorana's assignments of trinucleotides to the specific amino acid, he believed that GUG which coded for valine is also an initiator codon, because of the tests performed using te binding assay technique.. Hence he believed that there were two initiation triplets on messenger RNA: AUG and GUG. But today we know that there is only one AUG (codes for methionine).

  2) He also specified UGA has a nonsense triplet and unsure whether it is a termination codon. But    today we know that it is a stop codon.

  3) Khorana also specified UGG has coding for Try (tryptophan) where today trp stand for tryptophan.